package com.atguigu.myjuc.base;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class SyncVSLockDemo {
    public synchronized void m1(){
        System.out.println(Thread.currentThread().getName()+"come in");
        //线程睡眠
        try {TimeUnit.SECONDS.sleep(6);} catch (InterruptedException e) {throw new RuntimeException(e);}
    }
    private final Lock lock = new ReentrantLock();
    public void m2(){
        if (lock.tryLock()) {
           try {
               System.out.println(Thread.currentThread().getName()+"come in");
               //线程睡眠
               try {TimeUnit.SECONDS.sleep(2);} catch (InterruptedException e) {throw new RuntimeException(e);}
           }finally {
               lock.unlock();
           }
        }else {
            System.out.println(Thread.currentThread().getName()+"抢锁失败请重试！！");
        }
    }
    public void m3(){
        try {
            if (lock.tryLock(2L, TimeUnit.SECONDS)) {
                try{
                    System.out.println(Thread.currentThread().getName()+"come in");
                    try { TimeUnit.SECONDS.sleep(3); } catch (InterruptedException e) { e.printStackTrace(); }
                }finally {
                    lock.unlock();
                }
            }else {
                System.out.println(Thread.currentThread().getName() + "\t" + "----超过2秒抢锁失败，请重试");
            }
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        SyncVSLockDemo syncVSLockDemo = new SyncVSLockDemo();
        new Thread(()->{
            syncVSLockDemo.m3();
        },"t1").start();
        new Thread(()->{
            syncVSLockDemo.m3();
        },"t2").start();
    }
}
